GearWrench 4 Piece Aligning and Rolling Head Set

Features and Benefits:Splits stubborn nuts in 7/16"" - 3/4"" and 11mm - 19mm sizes across their flats;Works in channels not accessible to other; larger tools;Parallel action of pusher cracks nuts without damaging bolt threads;Chisel rotates through 360° to line up parallel to the bolt;Simply tighten the screw until the nut splits